1111211111071 has 2 divisors, whose sum is σ = 1111211111072. Its totient is φ = 1111211111070.

The previous prime is 1111211111069. The next prime is 1111211111089. The reversal of 1111211111071 is 1701111121111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1111211111071 - 2¹ = 1111211111069 is a prime.

Together with 1111211111069, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1111211111371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555605555535 + 555605555536.

It is an arithmetic number, because the mean of its divisors is an integer number (555605555536).

Almost surely, 2^{1111211111071} is an apocalyptic number.

1111211111071 is a deficient number, since it is larger than the sum of its proper divisors (1).

1111211111071 is an equidigital number, since it uses as much as digits as its factorization.

1111211111071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14, while the sum is 19.

Adding to 1111211111071 its reverse (1701111121111), we get a palindrome (2812322232182).

The spelling of 1111211111071 in words is "one trillion, one hundred eleven billion, two hundred eleven million, one hundred eleven thousand, seventy-one".